Anterior perforated substance

Brain: Anterior perforated substance
Scheme of rhinencephalon. (Anterior perforated substance labeled at bottom left.)
Base of brain. (Anterior perforated substance labeled at center.)
Latin	substantia perforata anterior
Gray's	subject #189 827
NeuroNames	hier-264
NeuroLex ID	birnlex_1096

Also known as substantia innominata.

The anterior perforated substance is an irregularly quadrilateral area in front of the optic tract and behind the olfactory trigone, from which it is separated by the fissure prima; medially and in front, it is continuous with the subcallosal gyrus; it is bounded laterally by the lateral stria of the olfactory tract and is continued into the uncus.

Its gray substance is confluent above with that of the corpus striatum, and is perforated anteriorly by numerous small blood vessels that supply such areas as the internal capsule.

Additional images

• 

  Human brainstem anterior view

See also

• Posterior perforated substance

External links

• Atlas of anatomy at UMich n1a8p1 - "Interpeduncular fossa" (#6)
• Anterior+perforated+substance at eMedicine Dictionary
• Photo at umdnj.edu
• NIF Search - Anterior perforated substance via the Neuroscience Information Framework

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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